Home / 143,428.89-197,929.05-79,765.32

Finding the Fourth Proportional to 143,428.89, 197,929.05 and 79,765.32

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Solution

The fourth proportional to 143,428.89, 197,929.05 and 79,765.32 is: 110,074.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,428.89 : 197,929.05 = 79,765.32 : x
  2. Step 2: Convert to fraction form
    143,428.89/197,929.05 = 79,765.32/x
  3. Step 3: Cross multiply
    143,428.89x = 197,929.05 × 79,765.32
  4. Step 4: Simplify right side
    143,428.89x = 15,787,874,010.55
  5. Step 5: Solve for x
    x = 15,787,874,010.55/143,428.89
  6. Step 6: Final answer
    x = 110,074.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.